The invention discloses a natural
aeolian sand mortar for decorating an external wall, which is mixed by the following components in parts by weight: 10-20 of ordinary
portland cement, 2-3 of slaked
lime, 3-5 of lightweight aggregate, 71-84 of heavy aggregate (
aeolian sand), 1.0 of complex additive, wherein the lightweight aggregate is an inorganic vitrified hollow micropore material; the heavy aggregate is the
aeolian sand; the preferred
fineness of the inorganic vitrified hollow micropore material is 80-100 mesh, the weight content of the aeolian sand with 50-70 mesh preferred
fineness is more than 90 percent, and the rest aeolian sand has more than 100-mesh
fineness. The invention has the advantages that the
mortar has prominent stereo texture, endurance and stability, light weight, saved energy and good crack- resistant and anti-drop properties, and exhibits natural and rich European style customs decoration effect; and the
mortar also has good smear workability and simple process, and is suitable for
mechanization construction. The construction method is as follows: the mortar is diluted by adding
water based on 30-50 percent of the mortar by weight, mechanical agitation or hand stirring is carried out to be evenly mixed to reach a proper
viscosity for mechanical spray or hand construction.